Combing machine for textile fibers



June 15, 1954 c. SCHLEIFER 2,680,885 COMBING MACHINE FOR TEXTILE FIBERSFiled July 11, 1950 2 Sheets-Sheet l INVEIVTaR cA/uo cue/km A TTOR/VE.)L

June 15, 1954 c, $HLE|FER 2,680,885

COMBING MACHINE FOR TEXTILE FIBERS Filed July 11, 1950 2 Sheets-Sheet 2I u vs/yra a: c4 RLO Jams/ =5 A TOME u Patented June 15, i954 UNITEDsrares PATENT OFFICE 2,680,885 CGMBING MACHINE FOR TEXTILE FIBERS CarloSchleifer, Milan, Italy Application July 11, 1950, Serial No. 173,127Claims priority, application Italy July 22, 1949 4 Claims.

This invention relates to a rectilinear combing machine, particularlysuitable for the curling of cotton or other short fibers, as distinctfrom combing machines of the Heilmann type for W001 or other long fibersand having entirely different operative features.

An object of this invention is to provide a combing machine, in whichthe scissor arms carrying the nippers are mounted on a lever rockingabout a stationary axis and are provided with means for alternatelymoving said nippers in front of the circular comb and with detachingrollers, respectively, alonga' path comprising two arcs of a circlehaving their centres on the axis of the circular comb and of thestationary pivot of said lever, respectively.

A further object of this invention is to provide a combing machine ofthe type referred to above, having stationary guide means, causing theclosed nippers to follow a path coinciding with an arc of a circlehaving its centre on the axis of the circular comb over the full periodduring which said nippers are within the range of said circular comb,while in the period during which the nippers approach the detachingrolls, the former are drawn apart, the upper nipper following a pathsuch as to be rapidly withdrawn from the lower nipper, which follows apath along an arc of a circle having its centre on the axis of the pivotof the rocking lever.

A further object of this invention is to provide in a combing machine ofthe type referred to above a spring between the lever and free end ofthe arm carrying the lower nipper to permit a slight adjustment of thepath followed by said lower nipper over the period during which thenippers are closed and are situated within the range of the circularcomb, this adjustment permitted by the spring being obtained by theaction of the inner nipper on the lower one which therefore describesduring the above indicated period an arc of a circle having its centeron the axis of the circular comb.

A further object of this invention is to provide in a combing machine ofthe type referred to above a supporting plate fulcrumed on the axis ofthe circular comb and carrying the stationary pivot, of oscillation ofthe lever having pivoted thereto the scissor arms carrying the nippers.In this manner, a slight rotation of the plate serves for adjusting thespacing between the lower nipper and detaching roll, without, however,changing the width of oscillation of the nippers.

Further characteristics and advantages of this invention will beunderstood from the appended the device in the closed specificationreferring to the accompanying draw- I denotes the pivot of the rotatingcomb P, I

having mounted at one end a normally fixed plate which may be adjustedby means of an eccentrio 5 acting on a pivot 3 of the plate 2 by meansof the lever l.

The plate 2 is provided with a shaped guide 6 and a pivot i forarticulation of a rocking lever'fl which is actuated at by link Ithinged at 9 to the lever B and at H to an operating arm rocking about astationary pivot l3.

The rocking lever 8 further carries a pivot M for oscillation of twoarms carrying the nippers, namely, an arm l5 carrying the top nipper l6and at its opposite end a roller [1 rolling within the guide 6, and anarm i=8 carrying the bottom nipper i 9 and at its opposite end anextension 20 supporting one end of a coiled spring 2 I, the other end ofwhich bears on a projection 22 on the rocking lever.

The arm I8 is provided with an extension 23 having screwed therein abolt 24 abutting at its end a surface 25 on the rocking lever 8.

The movement of the operating lever l2 rocks through the link ID thelever 8 about the stationary pivot T. The two arms l5, l8 carryingnippers are thereby moved in the direction of the arrow Ma together withthe pivot [4 of the rocking lever B. The nippers remain closed over thefirst section of the stroke under the action of the spring 2! whichpushes the bottom nipper against the to one till the end of the bolt 24,which has been suitably adjusted, abuts the surface 25. The nippers thenbegin to open.

The path followed by the ends of the nippers I6, I 9 depends upon theshape of the guide 6. The path is in the form of an arc of a circlehaving its centre on the axis of the rotating comb P, as long as thenippers remain closed. As soon as the nippers open, the bottom nipper l9performs an arc of a circle l9a having its centre on the axis of thepivot I, for the arm l8 carrying the nipper remains fixedly connectedwith the rocking lever 8 under the action of the spring 2| which haspushed the bolt 24 against the check surface 25.

The 6 draws the 1101') nirmnv nnmv wa its opposite 'end attached 26 ofthe arm 15 between two rollers 21, 28 rotat-- ing about pivots 29, 30carried by the plate 2. By suitably shaping the extension Zfiit ispossible to move the nippers l6, 19 along the above. dc.- scribed paths.

What I claim is:

1. A combing machine comprising, in combination with a circular comb andwith detaching rollers, a lever adapted to be rocked abouta stationaryaxis, two scissor-like arms pivotally conthe upper nipper is quicklydrawn away by the guide means from said lower nipper.

2. A combing machine according to claim 1, in which said guide meanscomprise a stationary cam and a roller adapted to engage said cam, saidroller being mounted on the arm carrying the upper nipper.

3. A combing machineas claimed in claim 1, in which saidguidemeanscomprise a pair. of guide rollers mounted on stationary pivots anda shaped extension of the arm carrying the upper nipper and adapted toengage said rollers.

4. Acombing machine as claimed in claim 1 comprisingin addition a platecarrying said lever to be rocked about a stationary axis and said means,for guiding-the arm carrying the upper nected with said lever, an uppernipper carried by one of said armsha lower nipper carried by the otherarm, means for guiding the arm carry-v ing the upper nipper to cause thesame to travel along a pathcoinciding with an arc of circle having itscenter, onthe axis. of the circular comb for the period during which thenippers are closed within the range of the circular comb, a springbetween said lever and the arm carrying the lowerjnipper formaintainingthe nippersclosed andan adjustable stop member carried bysaid arm and. engaging said lever to permit the opening of the nippers,when the latter are drawn towards said detaching rollers, the lowernipper travelling upon opening along an arc of a circle havingits centeron the axis of said lever, while nipper, said plate being pivoted to theaxis of said circular comb; whereby a slight rotation of the plateefiects adjustment of the spacing between the lower nipper .anddetaching rollers withoutv varying the width, of, the movement. of thenippers.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date Re. 15,528 Bohmer Jan. 16; 1923 1,464,820 Heinrich Aug. 14,1923 1,516,101 Jolly Nova 18, 1924."

FOREIGN PATENTS Number Country Date 208,955 Great Britain, .Jan:.3,:19245: 257,232 Great. Britain-. Sept; 29, 1927.:

